diff options
Diffstat (limited to 'kernel/drivers/infiniband/hw/ocrdma/ocrdma_main.c')
| -rw-r--r-- | kernel/drivers/infiniband/hw/ocrdma/ocrdma_main.c | 382 |
1 files changed, 86 insertions, 296 deletions
diff --git a/kernel/drivers/infiniband/hw/ocrdma/ocrdma_main.c b/kernel/drivers/infiniband/hw/ocrdma/ocrdma_main.c index 7a2b59aca..3afb40b85 100644 --- a/kernel/drivers/infiniband/hw/ocrdma/ocrdma_main.c +++ b/kernel/drivers/infiniband/hw/ocrdma/ocrdma_main.c @@ -1,21 +1,36 @@ -/******************************************************************* - * This file is part of the Emulex RoCE Device Driver for * - * RoCE (RDMA over Converged Ethernet) adapters. * - * Copyright (C) 2008-2012 Emulex. All rights reserved. * - * EMULEX and SLI are trademarks of Emulex. * - * www.emulex.com * - * * - * This program is free software; you can redistribute it and/or * - * modify it under the terms of version 2 of the GNU General * - * Public License as published by the Free Software Foundation. * - * This program is distributed in the hope that it will be useful. * - * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND * - * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, * - * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE * - * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD * - * TO BE LEGALLY INVALID. See the GNU General Public License for * - * more details, a copy of which can be found in the file COPYING * - * included with this package. * +/* This file is part of the Emulex RoCE Device Driver for + * RoCE (RDMA over Converged Ethernet) adapters. + * Copyright (C) 2012-2015 Emulex. All rights reserved. + * EMULEX and SLI are trademarks of Emulex. + * www.emulex.com + * + * This software is available to you under a choice of one of two licenses. + * You may choose to be licensed under the terms of the GNU General Public + * License (GPL) Version 2, available from the file COPYING in the main + * directory of this source tree, or the BSD license below: + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * - Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * - Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR + * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, + * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR + * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF + * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * * Contact Information: * linux-drivers@emulex.com @@ -23,13 +38,14 @@ * Emulex * 3333 Susan Street * Costa Mesa, CA 92626 - *******************************************************************/ + */ #include <linux/module.h> #include <linux/idr.h> #include <rdma/ib_verbs.h> #include <rdma/ib_user_verbs.h> #include <rdma/ib_addr.h> +#include <rdma/ib_mad.h> #include <linux/netdevice.h> #include <net/addrconf.h> @@ -45,14 +61,10 @@ MODULE_VERSION(OCRDMA_ROCE_DRV_VERSION); MODULE_DESCRIPTION(OCRDMA_ROCE_DRV_DESC " " OCRDMA_ROCE_DRV_VERSION); MODULE_AUTHOR("Emulex Corporation"); -MODULE_LICENSE("GPL"); +MODULE_LICENSE("Dual BSD/GPL"); -static LIST_HEAD(ocrdma_dev_list); -static DEFINE_SPINLOCK(ocrdma_devlist_lock); static DEFINE_IDR(ocrdma_dev_id); -static union ib_gid ocrdma_zero_sgid; - void ocrdma_get_guid(struct ocrdma_dev *dev, u8 *guid) { u8 mac_addr[6]; @@ -67,139 +79,28 @@ void ocrdma_get_guid(struct ocrdma_dev *dev, u8 *guid) guid[6] = mac_addr[4]; guid[7] = mac_addr[5]; } - -static bool ocrdma_add_sgid(struct ocrdma_dev *dev, union ib_gid *new_sgid) -{ - int i; - unsigned long flags; - - memset(&ocrdma_zero_sgid, 0, sizeof(union ib_gid)); - - - spin_lock_irqsave(&dev->sgid_lock, flags); - for (i = 0; i < OCRDMA_MAX_SGID; i++) { - if (!memcmp(&dev->sgid_tbl[i], &ocrdma_zero_sgid, - sizeof(union ib_gid))) { - /* found free entry */ - memcpy(&dev->sgid_tbl[i], new_sgid, - sizeof(union ib_gid)); - spin_unlock_irqrestore(&dev->sgid_lock, flags); - return true; - } else if (!memcmp(&dev->sgid_tbl[i], new_sgid, - sizeof(union ib_gid))) { - /* entry already present, no addition is required. */ - spin_unlock_irqrestore(&dev->sgid_lock, flags); - return false; - } - } - spin_unlock_irqrestore(&dev->sgid_lock, flags); - return false; -} - -static bool ocrdma_del_sgid(struct ocrdma_dev *dev, union ib_gid *sgid) -{ - int found = false; - int i; - unsigned long flags; - - - spin_lock_irqsave(&dev->sgid_lock, flags); - /* first is default sgid, which cannot be deleted. */ - for (i = 1; i < OCRDMA_MAX_SGID; i++) { - if (!memcmp(&dev->sgid_tbl[i], sgid, sizeof(union ib_gid))) { - /* found matching entry */ - memset(&dev->sgid_tbl[i], 0, sizeof(union ib_gid)); - found = true; - break; - } - } - spin_unlock_irqrestore(&dev->sgid_lock, flags); - return found; -} - -static int ocrdma_addr_event(unsigned long event, struct net_device *netdev, - union ib_gid *gid) -{ - struct ib_event gid_event; - struct ocrdma_dev *dev; - bool found = false; - bool updated = false; - bool is_vlan = false; - - is_vlan = netdev->priv_flags & IFF_802_1Q_VLAN; - if (is_vlan) - netdev = rdma_vlan_dev_real_dev(netdev); - - rcu_read_lock(); - list_for_each_entry_rcu(dev, &ocrdma_dev_list, entry) { - if (dev->nic_info.netdev == netdev) { - found = true; - break; - } - } - rcu_read_unlock(); - - if (!found) - return NOTIFY_DONE; - - mutex_lock(&dev->dev_lock); - switch (event) { - case NETDEV_UP: - updated = ocrdma_add_sgid(dev, gid); - break; - case NETDEV_DOWN: - updated = ocrdma_del_sgid(dev, gid); - break; - default: - break; - } - if (updated) { - /* GID table updated, notify the consumers about it */ - gid_event.device = &dev->ibdev; - gid_event.element.port_num = 1; - gid_event.event = IB_EVENT_GID_CHANGE; - ib_dispatch_event(&gid_event); - } - mutex_unlock(&dev->dev_lock); - return NOTIFY_OK; -} - -static int ocrdma_inetaddr_event(struct notifier_block *notifier, - unsigned long event, void *ptr) +static enum rdma_link_layer ocrdma_link_layer(struct ib_device *device, + u8 port_num) { - struct in_ifaddr *ifa = ptr; - union ib_gid gid; - struct net_device *netdev = ifa->ifa_dev->dev; - - ipv6_addr_set_v4mapped(ifa->ifa_address, (struct in6_addr *)&gid); - return ocrdma_addr_event(event, netdev, &gid); + return IB_LINK_LAYER_ETHERNET; } -static struct notifier_block ocrdma_inetaddr_notifier = { - .notifier_call = ocrdma_inetaddr_event -}; - -#if IS_ENABLED(CONFIG_IPV6) - -static int ocrdma_inet6addr_event(struct notifier_block *notifier, - unsigned long event, void *ptr) +static int ocrdma_port_immutable(struct ib_device *ibdev, u8 port_num, + struct ib_port_immutable *immutable) { - struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)ptr; - union ib_gid *gid = (union ib_gid *)&ifa->addr; - struct net_device *netdev = ifa->idev->dev; - return ocrdma_addr_event(event, netdev, gid); -} + struct ib_port_attr attr; + int err; -static struct notifier_block ocrdma_inet6addr_notifier = { - .notifier_call = ocrdma_inet6addr_event -}; + err = ocrdma_query_port(ibdev, port_num, &attr); + if (err) + return err; -#endif /* IPV6 and VLAN */ + immutable->pkey_tbl_len = attr.pkey_tbl_len; + immutable->gid_tbl_len = attr.gid_tbl_len; + immutable->core_cap_flags = RDMA_CORE_PORT_IBA_ROCE; + immutable->max_mad_size = IB_MGMT_MAD_SIZE; -static enum rdma_link_layer ocrdma_link_layer(struct ib_device *device, - u8 port_num) -{ - return IB_LINK_LAYER_ETHERNET; + return 0; } static int ocrdma_register_device(struct ocrdma_dev *dev) @@ -246,6 +147,9 @@ static int ocrdma_register_device(struct ocrdma_dev *dev) dev->ibdev.query_port = ocrdma_query_port; dev->ibdev.modify_port = ocrdma_modify_port; dev->ibdev.query_gid = ocrdma_query_gid; + dev->ibdev.get_netdev = ocrdma_get_netdev; + dev->ibdev.add_gid = ocrdma_add_gid; + dev->ibdev.del_gid = ocrdma_del_gid; dev->ibdev.get_link_layer = ocrdma_link_layer; dev->ibdev.alloc_pd = ocrdma_alloc_pd; dev->ibdev.dealloc_pd = ocrdma_dealloc_pd; @@ -275,9 +179,8 @@ static int ocrdma_register_device(struct ocrdma_dev *dev) dev->ibdev.dereg_mr = ocrdma_dereg_mr; dev->ibdev.reg_user_mr = ocrdma_reg_user_mr; - dev->ibdev.alloc_fast_reg_mr = ocrdma_alloc_frmr; - dev->ibdev.alloc_fast_reg_page_list = ocrdma_alloc_frmr_page_list; - dev->ibdev.free_fast_reg_page_list = ocrdma_free_frmr_page_list; + dev->ibdev.alloc_mr = ocrdma_alloc_mr; + dev->ibdev.map_mr_sg = ocrdma_map_mr_sg; /* mandatory to support user space verbs consumer. */ dev->ibdev.alloc_ucontext = ocrdma_alloc_ucontext; @@ -286,6 +189,7 @@ static int ocrdma_register_device(struct ocrdma_dev *dev) dev->ibdev.dma_device = &dev->nic_info.pdev->dev; dev->ibdev.process_mad = ocrdma_process_mad; + dev->ibdev.get_port_immutable = ocrdma_port_immutable; if (ocrdma_get_asic_type(dev) == OCRDMA_ASIC_GEN_SKH_R) { dev->ibdev.uverbs_cmd_mask |= @@ -307,12 +211,6 @@ static int ocrdma_register_device(struct ocrdma_dev *dev) static int ocrdma_alloc_resources(struct ocrdma_dev *dev) { mutex_init(&dev->dev_lock); - dev->sgid_tbl = kzalloc(sizeof(union ib_gid) * - OCRDMA_MAX_SGID, GFP_KERNEL); - if (!dev->sgid_tbl) - goto alloc_err; - spin_lock_init(&dev->sgid_lock); - dev->cq_tbl = kzalloc(sizeof(struct ocrdma_cq *) * OCRDMA_MAX_CQ, GFP_KERNEL); if (!dev->cq_tbl) @@ -344,7 +242,6 @@ static void ocrdma_free_resources(struct ocrdma_dev *dev) kfree(dev->stag_arr); kfree(dev->qp_tbl); kfree(dev->cq_tbl); - kfree(dev->sgid_tbl); } /* OCRDMA sysfs interface */ @@ -390,71 +287,10 @@ static void ocrdma_remove_sysfiles(struct ocrdma_dev *dev) device_remove_file(&dev->ibdev.dev, ocrdma_attributes[i]); } -static void ocrdma_add_default_sgid(struct ocrdma_dev *dev) -{ - /* GID Index 0 - Invariant manufacturer-assigned EUI-64 */ - union ib_gid *sgid = &dev->sgid_tbl[0]; - - sgid->global.subnet_prefix = cpu_to_be64(0xfe80000000000000LL); - ocrdma_get_guid(dev, &sgid->raw[8]); -} - -static void ocrdma_init_ipv4_gids(struct ocrdma_dev *dev, - struct net_device *net) -{ - struct in_device *in_dev; - union ib_gid gid; - in_dev = in_dev_get(net); - if (in_dev) { - for_ifa(in_dev) { - ipv6_addr_set_v4mapped(ifa->ifa_address, - (struct in6_addr *)&gid); - ocrdma_add_sgid(dev, &gid); - } - endfor_ifa(in_dev); - in_dev_put(in_dev); - } -} - -static void ocrdma_init_ipv6_gids(struct ocrdma_dev *dev, - struct net_device *net) -{ -#if IS_ENABLED(CONFIG_IPV6) - struct inet6_dev *in6_dev; - union ib_gid *pgid; - struct inet6_ifaddr *ifp; - in6_dev = in6_dev_get(net); - if (in6_dev) { - read_lock_bh(&in6_dev->lock); - list_for_each_entry(ifp, &in6_dev->addr_list, if_list) { - pgid = (union ib_gid *)&ifp->addr; - ocrdma_add_sgid(dev, pgid); - } - read_unlock_bh(&in6_dev->lock); - in6_dev_put(in6_dev); - } -#endif -} - -static void ocrdma_init_gid_table(struct ocrdma_dev *dev) -{ - struct net_device *net_dev; - - for_each_netdev(&init_net, net_dev) { - struct net_device *real_dev = rdma_vlan_dev_real_dev(net_dev) ? - rdma_vlan_dev_real_dev(net_dev) : net_dev; - - if (real_dev == dev->nic_info.netdev) { - ocrdma_add_default_sgid(dev); - ocrdma_init_ipv4_gids(dev, net_dev); - ocrdma_init_ipv6_gids(dev, net_dev); - } - } -} - static struct ocrdma_dev *ocrdma_add(struct be_dev_info *dev_info) { int status = 0, i; + u8 lstate = 0; struct ocrdma_dev *dev; dev = (struct ocrdma_dev *)ib_alloc_device(sizeof(struct ocrdma_dev)); @@ -480,17 +316,18 @@ static struct ocrdma_dev *ocrdma_add(struct be_dev_info *dev_info) goto alloc_err; ocrdma_init_service_level(dev); - ocrdma_init_gid_table(dev); status = ocrdma_register_device(dev); if (status) goto alloc_err; + /* Query Link state and update */ + status = ocrdma_mbx_get_link_speed(dev, NULL, &lstate); + if (!status) + ocrdma_update_link_state(dev, lstate); + for (i = 0; i < ARRAY_SIZE(ocrdma_attributes); i++) if (device_create_file(&dev->ibdev.dev, ocrdma_attributes[i])) goto sysfs_err; - spin_lock(&ocrdma_devlist_lock); - list_add_tail_rcu(&dev->entry, &ocrdma_dev_list); - spin_unlock(&ocrdma_devlist_lock); /* Init stats */ ocrdma_add_port_stats(dev); /* Interrupt Moderation */ @@ -519,9 +356,8 @@ idr_err: return NULL; } -static void ocrdma_remove_free(struct rcu_head *rcu) +static void ocrdma_remove_free(struct ocrdma_dev *dev) { - struct ocrdma_dev *dev = container_of(rcu, struct ocrdma_dev, rcu); idr_remove(&ocrdma_dev_id, dev->id); kfree(dev->mbx_cmd); @@ -538,18 +374,12 @@ static void ocrdma_remove(struct ocrdma_dev *dev) ib_unregister_device(&dev->ibdev); ocrdma_rem_port_stats(dev); - - spin_lock(&ocrdma_devlist_lock); - list_del_rcu(&dev->entry); - spin_unlock(&ocrdma_devlist_lock); - ocrdma_free_resources(dev); ocrdma_cleanup_hw(dev); - - call_rcu(&dev->rcu, ocrdma_remove_free); + ocrdma_remove_free(dev); } -static int ocrdma_open(struct ocrdma_dev *dev) +static int ocrdma_dispatch_port_active(struct ocrdma_dev *dev) { struct ib_event port_event; @@ -560,32 +390,9 @@ static int ocrdma_open(struct ocrdma_dev *dev) return 0; } -static int ocrdma_close(struct ocrdma_dev *dev) +static int ocrdma_dispatch_port_error(struct ocrdma_dev *dev) { - int i; - struct ocrdma_qp *qp, **cur_qp; struct ib_event err_event; - struct ib_qp_attr attrs; - int attr_mask = IB_QP_STATE; - - attrs.qp_state = IB_QPS_ERR; - mutex_lock(&dev->dev_lock); - if (dev->qp_tbl) { - cur_qp = dev->qp_tbl; - for (i = 0; i < OCRDMA_MAX_QP; i++) { - qp = cur_qp[i]; - if (qp && qp->ibqp.qp_type != IB_QPT_GSI) { - /* change the QP state to ERROR */ - _ocrdma_modify_qp(&qp->ibqp, &attrs, attr_mask); - - err_event.event = IB_EVENT_QP_FATAL; - err_event.element.qp = &qp->ibqp; - err_event.device = &dev->ibdev; - ib_dispatch_event(&err_event); - } - } - } - mutex_unlock(&dev->dev_lock); err_event.event = IB_EVENT_PORT_ERR; err_event.element.port_num = 1; @@ -596,7 +403,7 @@ static int ocrdma_close(struct ocrdma_dev *dev) static void ocrdma_shutdown(struct ocrdma_dev *dev) { - ocrdma_close(dev); + ocrdma_dispatch_port_error(dev); ocrdma_remove(dev); } @@ -607,16 +414,26 @@ static void ocrdma_shutdown(struct ocrdma_dev *dev) static void ocrdma_event_handler(struct ocrdma_dev *dev, u32 event) { switch (event) { - case BE_DEV_UP: - ocrdma_open(dev); - break; - case BE_DEV_DOWN: - ocrdma_close(dev); - break; case BE_DEV_SHUTDOWN: ocrdma_shutdown(dev); break; + default: + break; + } +} + +void ocrdma_update_link_state(struct ocrdma_dev *dev, u8 lstate) +{ + if (!(dev->flags & OCRDMA_FLAGS_LINK_STATUS_INIT)) { + dev->flags |= OCRDMA_FLAGS_LINK_STATUS_INIT; + if (!lstate) + return; } + + if (!lstate) + ocrdma_dispatch_port_error(dev); + else + ocrdma_dispatch_port_active(dev); } static struct ocrdma_driver ocrdma_drv = { @@ -627,34 +444,12 @@ static struct ocrdma_driver ocrdma_drv = { .be_abi_version = OCRDMA_BE_ROCE_ABI_VERSION, }; -static void ocrdma_unregister_inet6addr_notifier(void) -{ -#if IS_ENABLED(CONFIG_IPV6) - unregister_inet6addr_notifier(&ocrdma_inet6addr_notifier); -#endif -} - -static void ocrdma_unregister_inetaddr_notifier(void) -{ - unregister_inetaddr_notifier(&ocrdma_inetaddr_notifier); -} - static int __init ocrdma_init_module(void) { int status; ocrdma_init_debugfs(); - status = register_inetaddr_notifier(&ocrdma_inetaddr_notifier); - if (status) - return status; - -#if IS_ENABLED(CONFIG_IPV6) - status = register_inet6addr_notifier(&ocrdma_inet6addr_notifier); - if (status) - goto err_notifier6; -#endif - status = be_roce_register_driver(&ocrdma_drv); if (status) goto err_be_reg; @@ -662,20 +457,15 @@ static int __init ocrdma_init_module(void) return 0; err_be_reg: -#if IS_ENABLED(CONFIG_IPV6) - ocrdma_unregister_inet6addr_notifier(); -err_notifier6: -#endif - ocrdma_unregister_inetaddr_notifier(); + return status; } static void __exit ocrdma_exit_module(void) { be_roce_unregister_driver(&ocrdma_drv); - ocrdma_unregister_inet6addr_notifier(); - ocrdma_unregister_inetaddr_notifier(); ocrdma_rem_debugfs(); + idr_destroy(&ocrdma_dev_id); } module_init(ocrdma_init_module); |